Ram air turbine blade rotation over-speed prevention mechanism

Details Ram air turbine blade rotation over-speed prevention mechanism Ram air turbine blade rotation over-speed prevention mechanism

2007-12-11

2007-12-11

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Impeller rotation speed responsive

C416S147000

Reexamination Certificate

active

11136624

ABSTRACT:
A ram air turbine (RAT) prevents release of its turbine blades due an over-speed condition by detecting an over-speed condition with a turbine hub-mounted centrifugally operated trigger mechanism and rotating the blades to a fixed coarse pitch position with a release mechanism that responds to the trigger mechanism.

REFERENCES:
patent: 4411596 (1983-10-01), Chilman
patent: 4743163 (1988-05-01), Markunas et al.
patent: 5487645 (1996-01-01), Eccles
patent: 7074010 (2006-07-01), DeGroff et al.
patent: 2006/0239817 (2006-10-01), Nohr et al.

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